Dr. John H. Chen, MD
- Medicare services, 2017
- 3,568
- Part D claims, 2024
- 40
- Hospital affiliations
- 1
- Industry payments
- $388
- Medical group
- 1
- Practice address
- 1300 N Vermont Ave, Los Angeles, CA 90027
- Practice phone
- Call (213) 413-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chen's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John H. Chen is a diagnostic radiologist in Covina, California
Dr. Chen practices at CHA Hollywood Presbyterian Medical Center in Los Angeles, California, part of CHA Health Systems.
Dr. Chen's NPI, 1174639942, was assigned on August 22, 2006. Dr. Chen graduated from Chung Shan Medical University in 1974. Dr. Chen's California license number on file is A42452.
- NPI
- 1174639942NPI Registry (opens in a new tab)
- NPI enumeration date
- August 22, 2006
- NPI status
- Active
- Practice phone
- (213) 413-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1974
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John H. Chen practices in Los Angeles and Covina
Dr. Chen's primary practice is CHA Hollywood Presbyterian Medical Center, at 1300 N Vermont Ave, Los Angeles, CA 90027 in Los Angeles County. The practice phone is (213) 413-3000. The NPI Registry lists Dr. Chen's practice address as 210 W San Bernardino Rd, Covina, CA 91723.
- CHA Hollywood Presbyterian Medical CenterPrimary1300 N Vermont Ave, Los Angeles, CA 90027 · Los Angeles CountyPhone(213) 413-3000
- NPI Registry address210 W San Bernardino Rd, Covina, CA 91723 · Los Angeles CountyPhone(323) 913-4260
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. John H. Chen is affiliated with 1 site of care and 1 medical group
Dr. Chen's primary practice is CHA Hollywood Presbyterian Medical Center in Los Angeles, California, part of CHA Health Systems. The medical group on file is Southern California Permanente Medical Group.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John H. Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| CHA Hollywood Presbyterian Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John H. Chen is one of 4,096 diagnostic radiologists in California
Diagnostic radiology is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Chen is board certified in diagnostic radiology by the American Board of Radiology. Dmand AI has Dr. Chen's licenses on file in 2 states: California and Washington.
Specialties and state licenses
- Diagnostic radiology, CaliforniaPrimary
- Washington license
Diagnostic radiologists near Dr. Chen
Counts of diagnostic radiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John H. Chen billed Medicare for 3,568 services in 2017
CMS data shows 3,568 Medicare services from Dr. Chen across 25 procedure codes in 2017. Medicare paid $291,038 for them. Every service was in an office.
Dr. Chen's Medicare services by type, 2016 to 2017
- 2016
- 2017
- Imaging
- 2016: 4,1762017: 2,58638%
- Other services
- 2016: 1,1052017: 87121%
- Tests and treatments
- 2016: 1212017: 1118%
Dr. Chen compared with the California median for diagnostic radiologists, 2017
- Dr. Chen
- California median
- Medicare services
- 3,568vs 2,28156% above
- Part D claims
- 38vs 142.7 times
Medians across 3,734 diagnostic radiologists in California with Dmand AI profiles that report each measure.
Dr. Chen's most billed Medicare procedure codes, 2017
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chen and other diagnostic radiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John H. Chen's patients have a median age of 76
Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 76, with 0% women.
Dr. Chen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. John H. Chen wrote 40 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 40 Medicare Part D claims. 35% of them were for generic drugs. CMS names the drug for 38 of them, across 2 drugs with 11 or more claims each, at $6,212 in total drug cost. In 2023, CMS named 36 claims across 2 drugs.
Dr. Chen's Part D claims by kind of drug, 2024
- Generic14 claims35%
- Brand-name26 claims65%
Dr. Chen's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 362024: 386%
Drugs named by CMS: 2 in 2024, 2 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. John H. Chen received $388 in industry payments from 2016 to 2022
CMS Open Payments shows 12 general payments to Dr. Chen from 3 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. UCB, Inc. paid the most, $295.
General payments to Dr. Chen by program year, 2016 to 2022
Companies that paid Dr. Chen the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John H. Chen graduated from Chung Shan Medical University
Dr. Chen graduated from Chung Shan Medical University in 1974.
- Medical school
- Board certified in diagnostic radiology
Source: Dmand AI Professional Profile Data
Sources for Dr. John H. Chen's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John H. Chen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John H. Chen's NPI number?
Dr. John H. Chen's NPI number is 1174639942. It was assigned on August 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John H. Chen?
Dr. John H. Chen is a diagnostic radiologist in Covina, California. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. John H. Chen practice?
Dr. Chen practices at 1300 N Vermont Ave, Los Angeles, CA 90027. Dr. Chen also practices at 210 W San Bernardino Rd, Covina, CA 91723. Dr. Chen's primary practice is CHA Hollywood Presbyterian Medical Center in Los Angeles, California, part of CHA Health Systems.
What is Dr. John H. Chen's office phone number?
The practice phone on file for Dr. Chen is (213) 413-3000.
What is Dr. John H. Chen's medical license number?
Dr. Chen's California license number on file is A42452, one of the licenses on file in 2 states.
Which states has Dr. John H. Chen been licensed in?
Dmand AI has state licenses on file for Dr. Chen in California (1986 to 2025) and Washington (1983 to 2020).
Which hospitals is Dr. John H. Chen affiliated with?
Dr. Chen practices at CHA Hollywood Presbyterian Medical Center in Los Angeles, California.
What medical group is Dr. John H. Chen part of?
Dr. Chen is linked to Southern California Permanente Medical Group.
Does Dr. John H. Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 3,568 services in 2017.
Is Dr. John H. Chen board certified?
Yes. Dr. Chen is board certified in diagnostic radiology by the American Board of Radiology.
Show 5 more questionsShow fewer questions
What services does Dr. John H. Chen bill to Medicare?
In 2017, Dr. Chen's most billed Medicare services were medicare service (G0202), diagnostic imaging (71020) and radiation oncology (77080).
Where did Dr. John H. Chen go to medical school?
Dr. Chen graduated from Chung Shan Medical University in 1974.
What drugs does Dr. John H. Chen prescribe most?
In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Myrbetriq and Trospium Chloride.
Has Dr. John H. Chen received payments from drug or device companies?
CMS Open Payments shows $388 in general payments to Dr. Chen from 3 companies from 2016 to 2022. The largest total came from UCB, Inc.
How long has Dr. John H. Chen been practicing?
Dr. Chen graduated from medical school in 1974, 52 years ago.
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